<template>
	<div>
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>商品管理</el-breadcrumb-item>
			<el-breadcrumb-item>添加商品</el-breadcrumb-item>
		</el-breadcrumb>
		<!-- 卡片视图 -->
		<el-card>
			<!-- 提示 -->
			<el-alert :closable="false" title="添加商品信息" type="info" center show-icon></el-alert>

			<!-- 步骤条 -->
			<el-steps :space="200" align-center :active="activeindex - 0" finish-status="success">
				<el-step title="基本信息"></el-step>
				<el-step title="商品参数"></el-step>
				<el-step title="商品属性"></el-step>
				<el-step title="商品图片"></el-step>
				<el-step title="商品内容"></el-step>
				<el-step title="完成"></el-step>
			</el-steps>

			<!--  -->
			<el-form label-position="top" :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="100px">
				<el-tabs @tab-click="tabClicked" :before-leave="beforeTabLeave" v-model="activeindex" tab-position="left">

					<el-tab-pane name="0" label="基本信息">
						<el-form-item label="商品名称" prop="goods_name">
							<el-input v-model="addForm.goods_name"></el-input>
						</el-form-item>
						<el-form-item type="number" label="商品价格" prop="goods_price">
							<el-input v-model="addForm.goods_price"></el-input>
						</el-form-item>
						<el-form-item label="商品重量" prop="goods_weight">
							<el-input v-model="addForm.goods_weight"></el-input>
						</el-form-item>
						<el-form-item type="number" label="商品名称" prop="goods_number">
							<el-input v-model="addForm.goods_number"></el-input>
						</el-form-item>
						<el-form-item label="商品分类" prop='goods_cat'>
							<el-cascader v-model="addForm.goods_cat" :options="catelist" :props="cateProps" @change="handleChange"></el-cascader>
						</el-form-item>
					</el-tab-pane>

					<el-tab-pane name="1" label="商品参数">
						<el-form-item v-for="item in manyTableData" :key='item.attr_id' :label="item.attr_name">
							<el-checkbox-group v-model="item.attr_vals">
							    <el-checkbox border v-for="(cb,i) in item.attr_vals" :key="i" :label="cb"></el-checkbox>
							  </el-checkbox-group>
						</el-form-item>
					</el-tab-pane>

					<el-tab-pane name="2" label="商品属性">
						<el-form-item v-for="(item,i) in onlyTableData" :key='item.attr_id' :label="item.attr_name">
							<el-input v-model="item.attr_vals"></el-input>
						</el-form-item>
					</el-tab-pane>

					<el-tab-pane name="3" label="商品图片">
						<!-- action 图片上传地址  on-preview 预览事件 -->
						<el-upload

							:on-success="handleSuccess"
							:headers="headersobj"
						  :action="uploadUrl"
						  :on-preview="handlePreview"
						  :on-remove="handleRemove"
						  list-type="picture">
						  <el-button size="small" type="primary">点击上传</el-button>
						  <!-- <div slot="tip" class="el-upload__tip">只能上传jpg/png文件，且不超过500kb</div> -->
						</el-upload>
					</el-tab-pane>
					<el-tab-pane name="4" label="商品内容">
						<quill-editor v-model="addForm.goods_introduce"></quill-editor>

						<!-- 添加商品文本 -->
						<el-button @click='addshop' class="addbtn" type="primary">添加商品</el-button>
					</el-tab-pane>
				</el-tabs>
			</el-form>
		</el-card>

		<!-- 图片预览 -->
		<el-dialog
		  title="图片预览"
		  :visible.sync="previewVisible"
		  width="50%"
		  >
		 <img :src="perviewPath" alt="">
		</el-dialog>
	</div>
</template>

<script>
import _ from 'lodash'
export default {
  data () {
    return {
      previewVisible: false,
      // 上传图片地址
      uploadUrl: 'http://127.0.0.1:8888/api/private/v1/upload',
      activeindex: 0,
      // 添加商品的数据对象
      addForm: {
        goods_name: '',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: [{
          required: true,
          message: '请输入商品名称',
          trigger: 'blur'
        }],
        goods_price: [{
          required: true,
          message: '请输入商品价格',
          trigger: 'blur'
        }],
        goods_weight: [{
          required: true,
          message: '请输入商品重量',
          trigger: 'blur'
        }],
        goods_number: [{
          required: true,
          message: '请输入商品数量',
          trigger: 'blur'
        }],
        goods_cat: [{
          required: true,
          message: '请选择商品分类',
          trigger: 'blur'
        }]
      },
      // 商品分类列表
      catelist: [],
      cateProps: {
        label: 'cat_name',
        value: 'cat_id',
        children: 'children',
        expandTrigger: 'hover'
      },
      // 动态参数列表数组
      manyTableData: [],
      onlyTableData: [],
      // 图片上传组件的请求头对象
      headersobj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      perviewPath: ''
    }
  },
  created () {
    this.getCateList()
  },
  methods: {
    async getCateList () {
      const {
        data: res
      } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error('获取商品分类数据失败')
      }
      this.catelist = res.data
      console.log(this.catelist)
    },
    // 级联选择器选中项变化触发函数
    handleChange () {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
      console.log(this.addForm.goods_cat)
    },
    beforeTabLeave (activename, oldactivename) {
      // console.log(activename,oldactivename)
      if (oldactivename === '0' && this.addForm.goods_cat.length !== 3) {
        this.$message.error('请选择商品分类')
        return false
      }
    },
    async tabClicked () {
      // 参数面板
      if (this.activeindex === '1') {
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, { params: { sel: 'many' } })
        if (res.meta.status !== 200) {
          return this.$message.error('获取参数失败')
        }

        res.data.forEach(item => {
          item.attr_vals = item.attr_vals.length === 0 ? [] : item.attr_vals.split(' ')
        })

        this.manyTableData = res.data
      } else if (this.activeindex === '2') { // 商品属性面板
        const { data: res } = await this.$http.get(`categories/${this.cateId}/attributes`, { params: { sel: 'only' } })
        if (res.meta.status !== 200) {
          return this.$message.error('获取静态属性失败')
        }
        console.log(res.data)
        // this.onlyTableData
        this.onlyTableData = res.data
      }
    },
    // 图片预览事件
    handlePreview (file) {
      this.perviewPath = file.response.data.url
      this.previewVisible = true
    },
    // 处理移出图片的操作
    handleRemove (file) {
      console.log(file)
      const filePath = file.response.data.tmp_path
      const i = this.addForm.pics.findIndex(x => {
        x.pic == filePath
      })
      this.addForm.pics.splice(i, 1)
      console.log(this.addForm)
    },
    // 监听图片上传成功的事件
    handleSuccess (response) {
      console.log(response)
      // 拼接得到一个图片信息对象
      const picInfo = { pic: response.data.tmp_path }
      // 将图片信息对象push 带PICS数组中
      this.addForm.pics.push(picInfo)
      console.log(this.addForm.pics)
    },
    // 添加商品
			 addshop () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) {
					  return this.$message.error('请填写必要的表单项')
        }
        // 添加
        // 进行数据处理
        // 处理动态参数静态属性
        this.manyTableData.forEach(item => {
          const newInfo = { attr_id: item.attr_id, attr_value: item.attr_vals.join(' ') }
          this.addForm.attrs.push(newInfo)
        })
        this.onlyTableData.forEach(item => {
          const newInfo = { attr_id: item.attr_id, attr_value: item.attr_vals }
          this.addForm.attrs.push(newInfo)
        })
        const newaddform = _.cloneDeep(this.addForm)
        newaddform.goods_cat = newaddform.goods_cat.join(',')
        newaddform.attrs = this.addForm.attrs
        // console.log(newaddform)
        const { data: res } = await this.$http.post('goods', newaddform)

        if (res.meta.status !== 201) {
          return this.$message.error('添加商品失败！')
        }

        this.$message.success('添加商品成功！')
        this.$router.push('/goods')
      })
    }
  },
  computed: {
    cateId () {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>

<style scoped="scoped">
	.el-cascader{
		width: 180px;
	}
	.el-checkbox{
		margin: 0 10px 0 0 !important;
	}
	.el-dialog img{
		width: 100%;
	}
	.addbtn{
		margin-top: 15px;
	}
</style>
